Suito Kokusai Middle and High School: Academic Rigor, Admissions Ratios, Tuition, and Reputation — Japan's Premier Public IB School (2026 Edition)

Osaka Prefectural Suito Kokusai Middle and High School is Japan's first "publicly funded, privately operated" integrated middle and high school.

Established by Osaka Prefecture but managed and operated by the designated management organization Osaka YMCA, it is a public school under the School Education Act that incorporates immersion education—where mathematics and science are taught entirely in English—alongside the International Baccalaureate (IBDP). At public school tuition levels, students can achieve both a standard Japanese high school diploma and a pathway to overseas universities, making it a rare option nationwide.

However, there are three critical considerations for prospective families:

First, the admissions ratio has consistently remained in the 3–5x range for the aptitude-based middle school entrance examination.

Second, despite being public, IB completion involves "out-of-pocket" expenses (amounts not publicly disclosed). Third, not all high school students can advance to the International Baccalaureate course.

This article, based on primary sources from the Osaka Prefectural Education Department, official school materials, and the IB Organization (IBO) as of August 2026, provides a comprehensive analysis of admissions ratios, exam content, fees, university placements, and school reputation. Where information cannot be confirmed from public sources, this is explicitly marked as "unconfirmed," with a checklist of questions to raise at school information sessions appended at the end.

About Suito Kokusai: Japan's First Publicly Funded, Privately Operated IB Model

Suito Kokusai opened in April 2019 as Osaka City's Suito Kokusai Middle and High School in the Minato district of Konohana Ward, Osaka (approximately 800m walk from the Minato Liner stations "Porttown Nishi" and "Porttown Higashi"). It received IB accreditation in February 2020 and was transferred from Osaka City to Osaka Prefecture in April 2022, adopting its current name. A new building complex was completed in November 2022, featuring facilities including a Global Studio, Lecture Theater, arena, and swimming pool.

Its most distinctive feature is its operational structure. Utilizing the public international education school management program within the National Strategic Special Zone framework, it adopts a "publicly funded, privately operated" model in which Osaka Prefecture remains the establishing body while delegating management and operations to the Osaka YMCA. It is not a private school of the Osaka YMCA.

Students maintain enrollment status as public middle and high school students under the School Education Act, and upon graduation, they receive standard Japanese high school diplomas.

Leveraging the private sector's flexible personnel practices, it has achieved a teaching staff composition far removed from typical public schools, with English native speakers comprising approximately 30% of all faculty (per Osaka Prefectural School Guide). The designated management period runs from April 2022 through March 2029, with Osaka Prefecture's evaluation committee conducting annual reviews of faculty allocation and operational status.

For a comprehensive overview of what it means to attend "a school that remains a public institution while receiving international school–level education," along with alternative school choices, please refer to the detailed article on public schools and international courses.

Regarding IB accreditation, to be precise: the IBO's official database confirms only DP (Diploma Programme) accreditation (IB School since: February 21, 2020). While the middle school incorporates inquiry-based learning in the IB style, accreditation as an MYP (Middle Years Programme) school cannot be confirmed in publicly available materials. Care should be taken when encountering descriptions claiming "dual MYP and DP accreditation."

Academic Difficulty, Admissions Ratios, and the Real Picture of Entrance Examinations

Middle School Entrance Exam: 280-Point Aptitude Test, 3.73x Admissions Ratio (2026)

First and foremost, Suito Kokusai does not publish standardized "偏差値" (academic difficulty rankings). Because admissions are based on aptitude tests rather than the four-subject exams used by private schools, relying solely on standardized test scores to assess difficulty would be inappropriate. Actual difficulty must be gauged from the admissions ratio and the substance of the examination itself.

The 2026 admissions process has the following structure. The recruitment capacity was reduced from the previous 80 to 70, with 261 applicants, yielding a 3.73x admissions ratio.

English accounts for only 20 listening points, with test content based on Osaka Prefecture's "Vocabulary List for Elementary School English." In other words, native-level English proficiency is not a prerequisite for admission. Under the current system, there is no interview; selection is based on the combined score across all aptitude tests (when it was an Osaka city school, the system differed: residency within the city was standard, and selection combined Aptitude Tests I and II plus a group interview). The school draws students from across Osaka Prefecture, with the prerequisite that the student and guardians reside within the prefecture.

The admissions ratio trend is as follows:

※From 2024 onward: official Osaka Prefecture announcements. Before that: aggregations from cram schools and exam information sources citing Osaka city announcements.

While the number of applicants has trended downward in recent years, the 2026 ratio of 3.73x is comparable to the previous year because the capacity was also reduced to 70. One cannot simply say the exam has become "easier to pass." The matter was also discussed in Osaka Prefecture's evaluation committee; the school hypothesizes that an increase in families choosing private schools from the middle school stage—possibly due to high school tuition support policies—may be a factor, though this remains speculative.

Past exam papers are publicly released by Osaka Prefecture as "Aptitude Test Questions," allowing families to review actual content before consulting cram school materials. Families who have taken the exam report that "the style differs substantially from standard middle school entrance exam preparation," though such accounts represent individual cases and should not be generalized. It is clear that separate preparation for essay-writing and logic-based aptitude tests is necessary.

Treatment of Returnee Students

There is no confirmed separate "returnee (kikokushijo) admissions track" with independent recruitment capacity. However, a test accommodation system exists for returnee students requiring Japanese language instruction; applicants previously enrolled in local schools abroad must undergo preliminary consultation (the 2026 accommodation request deadline was October 31, 2025). Returnee students' English proficiency is more directly evaluated at the high school entrance level, discussed below.

High School Entrance: Global Inquiry Course and 100-Point English Performance Assessment

The high school course is the Global Inquiry Course. Internal middle school students advance without examination; external applicants are admitted through special admissions selection. For 2026, with 82 recruitment positions (including returnee selections) and 107 applicants, the ratio stood at 1.30x (2023: 1.63x, 2025: 1.28x).

Academic examinations cover Japanese, mathematics, English, science, and social studies at 45 points each. Additionally, as performance components specific to the Global Inquiry Course, students complete English oral reading (approximately 50 words within one minute, 20 points) and English oral questioning (4 questions, 80 points), totaling 100 points, with classroom instructions conducted in English. Furthermore, scores from EIKEN (英検), IELTS, or TOEFL iBT are converted using the prefecture's conversion scale and compared against the day's English exam score; the higher score is adopted—providing clear advantages for test-takers holding English qualifications and returnee students. Returnee student admissions also fall under this system, with 7 applicants for 2026 (maximum 8 approved in returnee admissions, counted within total recruitment capacity).

Tuition: What Does Public IB Cost?

Understanding Suito Kokusai's costs requires separating three categories: "tuition fees," "school-collected fees," and "out-of-pocket IB-related expenses."

Tuition itself is not collected for middle school, as it falls under compulsory education, and high school tuition qualifies for national and Osaka prefectural tuition support programs (eligibility varies by household). Beyond that, school-collected fees for materials, diagnostic tests, and activities are assessed. Based on the school's published 2024 fiscal-year budgets, fees are at this level:

Included in these breakdowns are TOEFL test fees, Z-kai diagnostic assessments, Studysapuri subscriptions, and portfolio services. Grade 9 field trip expenses are documented at approximately 85,690 yen per student. Uniforms, device purchases, and commuter passes are not included in these figures.

The most critical caveat: the school officially states that "International Baccalaureate completion is possible at public school tuition levels (though examination and material costs are out-of-pocket expenses)," yet the specific amounts of IB out-of-pocket costs are not disclosed in public sources. School materials reference partial refunds for DP course students in areas where they do not participate in Benesse diagnostics, suggesting a different fee structure from standard-course students exists. Families who assume "being public means virtually no additional costs" may encounter unexpected expenses upon selecting the DP course.

Nonetheless, the cost difference relative to private international schools is stark. Within the YMCA network, Osaka YMCA International School (OYIS) charges 2.24 million yen annually for Grades 7–9 and 2.317 million yen for Grades 10–12 (plus 170,000 yen in Grade 12 for DP exam fees). Compared to Suito Kokusai's school-collected fees of approximately 222,000 yen over the middle school years, the cost structure enabling IB completion is literally an order of magnitude lower. Relative to Tokyo's private international-course schools (such as Hiroo Gakuen and Mita International), Suito Kokusai remains extraordinarily affordable.

Curriculum: English Immersion and IBDP

Middle School: Mathematics and Science Taught Primarily in English

According to Osaka Prefecture's school guide, middle school conducts mathematics, science, English, and Global Studies/Global Issues (international understanding) primarily in English (varying by grade and course track). Weekly class hours total 33, exceeding the standard 29-hour model by 4 hours, allocated to English, inquiry, and content-area instruction in English. EAL (English as an Additional Language) instructors provide in-classroom and out-of-classroom support; no English qualification is required at entry.

Critically, Suito Kokusai is not a school where "English is taught as a subject," but rather a school where students build proficiency while withstanding the cognitive load of learning subject matter in English. While passing the 20-point listening component of the entrance exam clears the entry threshold, mathematics and science instruction proceeds in English from day one.

In the school's analysis of national academic achievement data, it reports that students learning subjects in English achieved above-national-average performance in Japanese, mathematics, and science at the tested grade level (a single-year, school-authored assessment). Whether students thrive in this environment depends heavily on individual characteristics and learning profiles.

High School: Three-Course Structure and IBDP

After a common first-year curriculum, students enter one of three courses in year two: Global Communication, Global Science, or International Baccalaureate. The DP (Diploma Programme) begins in April of Grade 11 and culminates with final examinations in November of Grade 12. It follows a dual Japanese-English format, with a full diploma awarded upon achieving 24 or more points of the 45-point maximum.

Courses offered include Japanese A (Japanese), English B, History (Japanese), Chemistry (English), Mathematics: Analysis and Approaches (English), Visual Arts, and Biology, alongside core requirements: TOK, CAS, and EE (announced as planned from 2023 onward, subject to change).

Two critical caveats apply:

First, how many students can progress to the International Baccalaureate course and what internal selection process exists are not documented in publicly available materials. A 2020 school visit report mentions "20 IB course places," but this is third-party, historical information and cannot be treated as current capacity.

Second, even students not advancing to the DP track enroll in the DP English course from Grade 11 onward and may elect other IB subjects, meaning IB education benefits are not limited to DP diploma candidates.

For details on DP subject composition and assessment structures, please consult the article on IBDP curriculum.

The school's English proficiency target at high school graduation is CEFR B2 (TOEFL iBT 72–94, roughly EIKEN Grade Pre-1 equivalent)—an exceptionally high standard for a public school.

University Outcomes: 30 Overseas Acceptances, IB Scores Undisclosed

The school's publicly disclosed 2025 entrance outcomes (as of July 1, 2025) show 30 overseas university acceptances (including 3 Diploma recipients; Conditional Offers included) and 34 national public university acceptances. Overseas institutions include leading English-speaking universities such as National University of Singapore (NUS), University College London (UCL), University of Melbourne, University of Toronto, University of Edinburgh, McGill University, and King's College London.

Domestically, the results include state and public universities such as Osaka University, Hokkaido University (2 students), University of Tsukuba, Okayama University (6 students), and Osaka Metropolitan University (10 students), as well as private institutions including Waseda, Keio, ICU, Doshisha, and Kwansei Gakuin.

2025 marks the year in which the first cohort of students who entered junior high in 2019 will graduate from senior high school, assuming straight progression. This means these results are significant as the first output to include students who completed Suito International's six-year integrated education program.

However, two important caveats are necessary.

First, these are admission results, not enrollment statistics. Because the total number of graduates and the method of counting multiple acceptances are not disclosed in the same source materials, it is impossible to calculate "what percentage of graduates enrolled in overseas universities."

Second, as the most important metric for an IB school, the number of IBDP exam takers, full diploma acquisition rate, and average score could not be confirmed in any public materials from the school, Osaka Prefecture, or the IBO. The notation "30 overseas university admissions (3 with Diploma)" cannot be reinterpreted as the number of DP holders. When comparing the outcomes of IB education with other schools, these three figures should be directly confirmed at an information session.

Reputation and Reviews: The Reality of Public-Private Partnerships

Regarding reputation, it is most reliable to first consult the official evaluation by Osaka Prefecture's Designated Manager Evaluation Committee rather than relying solely on anonymous reviews.

In the evaluation proposal for FY2025, items such as teaching staff allocation, teacher qualifications, working conditions, professional development, and safety measures consistently receive Grade A ratings, demonstrating that the structure does not lack administrative oversight despite being privately operated. The school reports implementation of student general assemblies, consultations toward establishing a parents' association, selection of sister school candidates utilizing the YMCA network, and IB education research partnerships with OYIS.

Conversely, committee members have expressed the view that international achievement should not be measured solely by overseas university admissions, and have called for career education that considers diverse pathways including domestic universities.

From parents and prospective students, there are voices praising the "liberal school atmosphere" and "robust English environment," alongside observations such as "the commute to Nanko is lengthy" and "as a newly established school, policies change frequently." While online discussions reference teacher turnover, no public statistics exist on teacher attrition or retention rates, and such information is not substantiated as fact. Time-series data on recognized bullying incidents, absenteeism rates, and early withdrawal rates also remain unpublished. When consulting reviews, attention to the posting date (before or after the school became prefectural) is necessary.

Families and Students for Whom This School Is—and Is Not—Well-Suited

Based on the research findings, the following analysis emerges.

Families and students likely to be well-suited:

• Those wishing to maintain a Japanese senior high school diploma and public-sector tuition levels while keeping options open for overseas universities and IBDP
• Those wanting to place their child in an environment where English is used as a tool for learning mathematics, science, and inquiry rather than as a subject in isolation
• Students who enjoy learning through presentation, discussion, and inquiry-based methods
• Those ready to undertake preparation for aptitude-test formats (essays, logic, and critical thinking)

Families and students for whom careful consideration is warranted:

• Those operating under the assumption that "because it is public, there are virtually no additional costs" (IB program costs, uniforms, devices, and seminar fees are separate)
• Those for whom learning mathematics and science in English would likely cause significant stress
• Those who have already decided on a general admissions pathway for university entrance and prefer traditional lecture-style instruction
• Those for whom daily commuting to Nanko (Sumiyoshi Ward) would become a burden

The latter two points reflect compatibility with the educational approach and location, not the quality of the school itself.

Five Questions to Confirm at Information Sessions

Topics not clarified in public materials should form your information-session question list. Listed in order of importance:

1. Current enrollment capacity for the International Baccalaureate course and the criteria for internal selection (including the number of applicants and actual students who proceeded)
2. Number of IBDP exam takers, full diploma acquisition rate, and average score (for the most recent three years)
3. Total additional out-of-pocket expenses during DP enrollment (standard amounts for textbooks, final examination fees, and related costs)
4. Total amount paid in the first year of enrollment (including uniforms, devices, complete materials, and seminar savings funds)
5. Composition of faculty and students (number of foreign and English-native teachers, percentage of returnees, number of EAL users)

English Preparation Before Admission and During Your Student Years

The English required for Suito International's entrance exam differs markedly by level: in junior high, a 20-point listening component based on elementary-level vocabulary; in senior high, 100 points for oral performance (sight reading and oral questioning) plus conversion of English qualifications. Once enrolled, success depends less on English proficiency itself than on the stamina to continue learning academic subjects in English.

To bridge this gap, what matters most is not rushing through vocabulary and grammar, but building experience—gradually and without strain before admission—in listening to and comprehending English, and organizing your own thoughts in English to speak them aloud.

For returnee children, the reverse challenge arises: maintaining balance with Japanese written expression (aptitude tests I and III) while preserving English ability. For those aiming for senior high entry, qualifying for English certificates such as Eiken, IELTS, or TOEFL iBT becomes a direct asset under the conversion system.

ELT is an English school founded in London in 1984. With fully dedicated lessons from native instructors who hold teaching credentials (CELTA/DELTA) or master's degrees, we design bespoke lessons by working backward from your child's current English level and goals. Whether preparing for an English immersion environment like Suito International, maintaining English proficiency after returning home, or preparing for senior high entrance exam English qualifications, we offer consultations tailored to your family's circumstances.

The Value of Pursuing IB at a Public School, and What to Confirm

The value of Suito International lies not in being "public and affordable," but in maintaining the graduation credential and cost structure of a public secondary school while undertaking serious engagement with English immersion and IBDP. By 2025, the first cohort of six-year integrated students has demonstrated strong overseas university admissions results, showing that the school's model is beginning to function. However, three critical decision-making factors remain undisclosed: DP course enrollment capacity and selection criteria, IBDP score results, and the total out-of-pocket IB costs. We recommend confirming these three points at an information session, then making your decision in light of your child's characteristics (whether they would thrive in an environment of learning academic subjects in English).

If you wish to discuss preparation aligned with Suito International—such as building English skills before admission or maintaining English ability after returning home—ELT's specialist counselors are here to guide your family based on your specific circumstances.